The Coastal Ecosystem Mapping and Media Viability Project

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Figure 30. Full Digital Terrain Model (DTM) created using the Mosaic to New Raster tool, combining the DSM with NoData values for where trees were located with the tin raster. Figure 24: Full Digital Terrain Model (DTM) created using the Mosaic to New Raster tool, combining the DSM with NoData values for where trees were located with the tin raster.

To calculate tree height, we now simply compute DSM - DTM using the Raster Calculator tool (spatial analyst => map algebra). Figure 25 shows the final raster output with each cell having either a value of zero meaning that there is no tree, or a pixel-specific tree height value.

The Coastal Ecosystem Mapping and Media Viability Project

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